Ammo Specifications
More Information on Remington .22 Long Rifle Ammo
Remington .22LR Subsonic 40 Grain Hollow Point (21249) is a specialized rimfire load designed for shooters who want dependable .22 Long Rifle performance at a velocity that remains below the speed of sound under typical conditions. Combining a 40-grain plated hollow point bullet with a factory-rated muzzle velocity of 1,050 feet per second, this ammunition is particularly suited to suppressed shooting, small-game applications, pest control, and recreational shooting where reduced noise is desirable. The 21249 configuration comes packaged in a convenient 225-round box, providing a useful quantity for extended shooting sessions.
The cartridge is loaded with a 40-grain plated hollow point (PHP) projectile. The hollow-point cavity is designed to provide terminal performance appropriate for small-game and varmint applications, while the plated exterior helps reduce direct contact between exposed lead and the firearm’s bore. At 40 grains, the bullet also uses one of the most established projectile weights in .22 LR, providing a good combination of stability, retained energy, and reliable functioning in a broad range of rimfire firearms.
Remington lists this load at a muzzle velocity of 1,050 fps, producing approximately 98 foot-pounds of muzzle energy. At 50 yards, factory ballistic figures show the bullet traveling approximately 950 fps with 80 foot-pounds of energy. At 100 yards, velocity drops to approximately 867 fps, while retained energy is about 67 foot-pounds. Remington publishes a ballistic coefficient of 0.079 for the 40-grain projectile.
The subsonic velocity is the defining characteristic of this ammunition. A projectile traveling below the speed of sound avoids the sharp ballistic crack associated with supersonic ammunition. When used with an appropriate suppressor, eliminating that crack can noticeably reduce the overall sound signature. A suppressor does not make a firearm silent, however, as the firearm’s action, muzzle report, and bullet impact continue to generate sound. Actual velocity can also vary with barrel length and environmental conditions.
Another advantage of a 40-grain subsonic load is that it provides substantially more bullet mass than many lightweight specialty .22 LR loads. Instead of achieving performance through extreme velocity, this cartridge combines a conventional bullet weight with moderate speed. Shooters should expect a more pronounced trajectory at longer distances than they would experience with high-velocity or hyper-velocity .22 LR ammunition.
As with other rimfire cartridges, reliable ignition and consistent ammunition dimensions are especially important for dependable operation. Remington manufactures this load for firearms chambered in .22 Long Rifle, although shooters using semi-automatic firearms should verify reliable cycling with their particular firearm because reduced-velocity ammunition can behave differently between platforms.
Packaged in a 225-round box, Remington 21249 provides considerably more ammunition than traditional 50- or 100-round rimfire packages. Its combination of a 40-grain plated hollow point, 1,050-fps muzzle velocity, subsonic performance, and bulk packaging makes it a distinctive .22 LR option for shooters seeking reduced-velocity ammunition for suppressed shooting, small-game use, or general recreational shooting.
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